Key role of orbital splitting in two-dimensional Janus transition metal dichalcogenides: From stability to ferrovalley material designRemoveLei Li, Ji-Chun Lian, Zi-Xuan Yang, Tao Huang, Jun-Qi Xu, X. S. Wang, Gui-Fang Huang, Wangyu Hu, Wei-Qing Huang, and Xidong DuanPhys. Rev. B 112, 075423 (2025)